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Riva TTS Spanish US FastPitch

Logo for Riva TTS Spanish US FastPitch
Spanish US FastPitch model
Latest Version
December 19, 2023
86.41 MB

Speech Synthesis: FastPitch 1.1 Model Card

Model Overview

FastPitch is a mel-spectrogram generator, designed to be used as the first part of a neural text-to-speech system in conjunction with a neural vocoder. This model uses the International Phonetic Alphabet (IPA) for inference and training.

Model Architecture

FastPitch is a fully-parallel text-to-speech model based on FastSpeech, conditioned on fundamental frequency contours. The model predicts pitch contours during inference. By altering these predictions, the generated speech can be more expressive, better match the semantic of the utterance, and in the end more engaging to the listener. FastPitch is based on a fully-parallel Transformer architecture, with much higher real-time factor than Tacotron2 for mel-spectrogram synthesis of a typical utterance.



This model is trained on proprietary data sampled at 44100Hz, and can be used to generate a Spanish (US) voice. This model supports 1 female and 1 male voice. The female voice comes with neutral, calm, angry and sad emotions. The male voice comes with neutral, calm, happy, and angry emotions. Each emotion is accessed as a speaker. For example Female-Calm, Male-Happy, and so on.

How to Use this Model

FastPitch is intended to be used as the first part of a two stage speech synthesis pipeline. FastPitch takes text and produces a mel-spectrogram. The second stage takes the generated mel-spectrogram and returns audio.

The encryption key for this model is tlt_encode


Spanish text strings


Mel-spectrogram of shape (batch x mel_channels x time)


[1] FastPitch: Parallel Text-to-speech with Pitch Prediction

Suggested Reading

Refer to the Riva documentation for more information.


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